Răspuns :
aria discului = [tex] \pi r^{2} [/tex]
a)aria= π 8²=64π
b)aria= π 2√3² =12π
c)aria= π 1,2²=1,44π
d)[tex] \frac{3radical5}{2} [/tex] ² π
= [tex] \frac{45}{4} \pi [/tex]
a)aria= π 8²=64π
b)aria= π 2√3² =12π
c)aria= π 1,2²=1,44π
d)[tex] \frac{3radical5}{2} [/tex] ² π
= [tex] \frac{45}{4} \pi [/tex]